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Wed, 2 Nov 2022 10:03:09 +0800 From: Liu Shixin To: Alexander Viro , Eric Biederman , Kees Cook CC: , , , Liu Shixin Subject: [PATCH] binfmt_misc: fix shift-out-of-bounds in check_special_flags Date: Wed, 2 Nov 2022 10:51:23 +0800 Message-ID: <20221102025123.1117184-1-liushixin2@huawei.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.175.113.32] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggpemm100009.china.huawei.com (7.185.36.113) X-CFilter-Loop: Reflected ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1667354598; a=rsa-sha256; cv=none; b=6T/52KTXWAzNvXT8muC6ZbpK+pAkgxW3XHRYxs7BajQRFe1mlzKEamzEODcZ3L32Hm1pKX rN/9alZ65hGhqo+ujtuEX/Pw/4i0a6M1NwtqfOeVwdkyAWTAkM80LAgotMCbKPxtlI63PE BlFs0JFECqSF5eIrHarYBKWMNaCdw7k= ARC-Authentication-Results: i=1; imf12.hostedemail.com; dkim=none; dmarc=pass (policy=quarantine) header.from=huawei.com; spf=pass (imf12.hostedemail.com: domain of liushixin2@huawei.com designates 45.249.212.188 as permitted sender) smtp.mailfrom=liushixin2@huawei.com ARC-Message-Signature: i=1; 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Signed-off-by: Liu Shixin --- fs/binfmt_misc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c index e1eae7ea823a..bb202ad369d5 100644 --- a/fs/binfmt_misc.c +++ b/fs/binfmt_misc.c @@ -44,10 +44,10 @@ static LIST_HEAD(entries); static int enabled = 1; enum {Enabled, Magic}; -#define MISC_FMT_PRESERVE_ARGV0 (1 << 31) -#define MISC_FMT_OPEN_BINARY (1 << 30) -#define MISC_FMT_CREDENTIALS (1 << 29) -#define MISC_FMT_OPEN_FILE (1 << 28) +#define MISC_FMT_PRESERVE_ARGV0 (1UL << 31) +#define MISC_FMT_OPEN_BINARY (1UL << 30) +#define MISC_FMT_CREDENTIALS (1UL << 29) +#define MISC_FMT_OPEN_FILE (1UL << 28) typedef struct { struct list_head list;